SAL: Seaboard Air Line Railroad gravy boat,Scammell's

This is a large gravy boat in excellent condition with a very little signs of age.It has a few little darker dots and scratches. On one side is stylized letters SAL and two thin green stripes on both sides.I belieave it was used on Seabord AirLine Railroad .It is reatauran or Railroad heavy china sauce boat. Measures about 10 1/2" long,3 3/4"wide,4 3/4" tall.No mark,but I have other dishes in the same pattern backstamped: Scammell's Trenton China.2 available. $15/each plus shipping.I need to know the zipcode to estimate shipping.